add link from features article

Author: vhorne

articles/firewall/premium-features.md

@@ -5,7 +5,7 @@ author: vhorne
 ms.service: firewall
 services: firewall
 ms.topic: conceptual
-ms.date: 03/30/2022
+ms.date: 05/25/2022
 ms.author: victorh
 ms.custom: references_regions
 ---
@@ -56,7 +56,7 @@ To learn more about Azure Firewall Premium Intermediate CA certificate requireme
 
 A network intrusion detection and prevention system (IDPS) allows you to monitor your network for malicious activity, log information about this activity, report it, and optionally attempt to block it. 
 
-Azure Firewall Premium provides signature-based IDPS to allow rapid detection of attacks by looking for specific patterns, such as byte sequences in network traffic, or known malicious instruction sequences used by malware. The IDPS signatures are applicable for both application and network level traffic (Layers 4-7), they're fully managed, and continuously updated. IDPS can be applied to inbound, spoke-to-spoke (East-West), and outbound traffic. Spoke-to-spoke (East-West) includes traffic that goes from/to an on-premises network.
+Azure Firewall Premium provides signature-based IDPS to allow rapid detection of attacks by looking for specific patterns, such as byte sequences in network traffic, or known malicious instruction sequences used by malware. The IDPS signatures are applicable for both application and network level traffic (Layers 4-7), they're fully managed, and continuously updated. IDPS can be applied to inbound, spoke-to-spoke (East-West), and outbound traffic. Spoke-to-spoke (East-West) includes traffic that goes from/to an on-premises network. You can configure your IDPS private IP address ranges using the **Private IP ranges** preview feature. For more information, see [Azure Firewall preview features](firewall-preview.md#idps-private-ip-ranges-preview).
 
 The Azure Firewall signatures/rulesets include:
 - An emphasis on fingerprinting actual malware, Command and Control, exploit kits, and in the wild malicious activity missed by traditional prevention methods.